using System;
using System.Collections.Generic;
using System.IO;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.interfaces;

/*
 * $Id: PdfAXmpWriter.java 322 2012-07-23 09:58:41Z bruno $
 *
 * This file is part of the iText (R) project.
 * Copyright (c) 1998-2012 1T3XT BVBA
 * Authors: Alexander Chingarev, Bruno Lowagie, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
namespace iTextSharp.text.xml.xmp{
    /**
     * Subclass of XmpWriter that adds info about the PDF/A level.
     * @see XmpWriter
     */
    public class PdfAXmpWriter : XmpWriter {

        /**
         * Creates and XMP writer that adds info about the PDF/A conformance level.
         * @param os
         * @param info
         * @param conformanceLevel
         * @throws IOException
         */
        public PdfAXmpWriter(Stream os, PdfDictionary info, PdfAConformanceLevel conformanceLevel)
        : base(os, info)
    {
            AddRdfDescription(conformanceLevel);
        }

        /**
         * Creates and XMP writer that adds info about the PDF/A conformance level.
         * @param os
         * @param info
         * @param conformanceLevel
         * @throws IOException
         */
        public PdfAXmpWriter(Stream os, IDictionary<string, string> info, PdfAConformanceLevel conformanceLevel)
        : base(os, info)
    {
            AddRdfDescription(conformanceLevel);
        }

        /**
         * Adds information about the PDF/A conformance level to the XMP metadata.
         * @param conformanceLevel
         * @throws IOException
         */
        private void AddRdfDescription(PdfAConformanceLevel conformanceLevel) {
            PdfASchema schema = new PdfASchema();
            switch (conformanceLevel)
            {
                case PdfAConformanceLevel.PDF_A_1A:
                    schema.AddPart("1");
                    schema.AddConformance("A");
                    break;
                case PdfAConformanceLevel.PDF_A_1B:
                    schema.AddPart("1");
                    schema.AddConformance("B");
                    break;
                case PdfAConformanceLevel.PDF_A_2A:
                    schema.AddPart("2");
                    schema.AddConformance("A");
                    break;
                case PdfAConformanceLevel.PDF_A_2B:
                    schema.AddPart("2");
                    schema.AddConformance("B");
                    break;
                case PdfAConformanceLevel.PDF_A_2U:
                    schema.AddPart("2");
                    schema.AddConformance("U");
                    break;
                case PdfAConformanceLevel.PDF_A_3A:
                    schema.AddPart("3");
                    schema.AddConformance("A");
                    break;
                case PdfAConformanceLevel.PDF_A_3B:
                    schema.AddPart("3");
                    schema.AddConformance("B");
                    break;
                case PdfAConformanceLevel.PDF_A_3U:
                    schema.AddPart("3");
                    schema.AddConformance("U");
                    break;
                default:
                    break;
            }
            base.AddRdfDescription(schema);
        }

    }
}